20 terms

chapter 3 prob and stats

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probability experiment
an action or trial through which specific results are obtained
outcome
the result of a single trial in a probability experiment
sample space
the set of all possible outcomes of a probability experiment
event
a subset of the sample space
tree diagram
a visual display of the outcomes of a probability experiment by using branches
simple event
an event that consists of a single outcome
Fundamental Counting Principle
the number of ways that events can occur in sequence is found by multiplying the number of ways one event can occur by the number of ways the other event(s) can occur
Classical (Theoretical) Probability
each outcome in a sample space is equally likely to occur
Empirical (statistical) Probability
based on observations obtained from probability experiments
Law of large numbers
as an experiment is repeated over and over, the emperical probability of an event approaches the theoretical probability of the event
range of probability rule
the probability of an event is between 0 and 1
complement of an event
the set of all outcomes in a sample space that are not included in the given event
odds of winning
the ratio of the number of successful outcomes to the number of unsuccessful outcomes
odds of losing
the ratio of the number of unsuccessful outcomes to the number of successful outcomes
conditional probability
the probability of an event occurring given that another event has already occurred
independent events
the occurrence of one of the events does not affect the probability of the occurrence of another event
dependent events
the occurrence of one of the events affects the probability of the occurrence of the other event
mutually exclusive events
2 events that cannot occur at the same time
permutation
an ordered arrangement of objects
combination
a selection of objects from a set without regard to order